English plurals: More than just adding “s”

No language can thrive without having a way for its speakers to express things in the plural; for example, two desserts are always better than one. As you know, most English nouns form their plurals by adding s or es. But a simple rule with no exceptions would be boring, don't you think? Test your knowledge by choosing the correct plurals for the words below.

1. In ordinary contexts, the plural of trout is .

trout

trouts

both are correct

2. The plural of cactus is .

cacti

cactuses

both are correct

3. The plural of loaf is .

loafs

loaves

both are correct

4. The plural of sheep is .

sheep

sheeps

both are correct

5. The plural of thesis is .

thesises

theses

both are correct

6. The plural of mongoose is .

mongooses

mongeese

both are correct

7. The plural of dwarf is .

dwarfs

dwarves

both are correct

8. The plural of louse is .

louses

lice

both are correct

9. The plural of aircraft is .

aircrafts

aircraft

both are correct

10. The plural of memorandum is .

memoranda

memorandums

both are correct